these 19 derivations will be built:
  /nix/store/4x18k1m6c2gd27nsgpgxnw19snywl3id-tincd-deps-0.1.0.drv
  /nix/store/0a53k698xyh3qgmxi6gd40wqaw8s0242-tincd-0.1.0.drv
  /nix/store/aczbx2ygkhrif6afag7iq3rncziy11kc-system-path.drv
  /nix/store/7a4sb1cgn5pf7wxa2g2qayngxg64jbm7-dbus-1.drv
  /nix/store/v927mcn04j0zml1hnbsms6f9ah8dmrrv-X-Restart-Triggers-dbus-broker.drv
  /nix/store/5r10dysmj5shr4x6rcc7zkgbbkzqsyh4-unit-dbus-broker.service.drv
  /nix/store/nl49m2ngdwbady85xgnan2ri85qz5yci-unit-tinc.mesh.service.drv
  /nix/store/i5jhqficvl3wy1h4wf7fyrc7acm2ywfl-system-units.drv
  /nix/store/71w76cgk1kj8v75396vx9vdx1r31726f-unit-dbus-broker.service.drv
  /nix/store/in8cxjwiglay58vyb9az2pkvhiqm1y3w-user-units.drv
  /nix/store/ix8rww0638g03rchv6ksjgg23g70lmqb-etc.drv
  /nix/store/32hvcpk3ncfky7pbrmi2c5in79karvb5-activate.drv
  /nix/store/zfx508b1xyg815xl92znm1wpkv1cz5n0-nixos-system-alpha-test.drv
  /nix/store/5f9hrsc8gc92a5inqm7kaqqlnw4sgfx6-closure-info.drv
  /nix/store/cic4qri1f74jsgg7mz2pvj8y5c478qyl-run-nixos-vm.drv
  /nix/store/kr5df7iyqdvzpvxqjavlgaiz3aqyl9cg-nixos-vm.drv
  /nix/store/ywff2mjxgxpn7rv4950az5bczif52i33-driverConfiguration.json.drv
  /nix/store/52mdk6hzw59q9i9xk5nb30fhjbgjv612-nixos-test-driver-tincd-nixos-crossimpl.drv
  /nix/store/vpd30va2172h4xi4vczg7fvk1jdcv5al-vm-test-run-tincd-nixos-crossimpl.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
Failed to find a machine for remote build!
derivation: vpd30va2172h4xi4vczg7fvk1jdcv5al-vm-test-run-tincd-nixos-crossimpl.drv
required (system, features): (aarch64-linux, [kvm, nixos-test])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])